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// **********************************************************************
//
// Copyright (c) 2003-2014 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
using System;
using System.Collections;
using System.IO;
using System.Text;
using Filesystem;
class Parser
{
virtual internal string Input
{
get
{
Console.Write("> ");
Console.Out.Flush();
try
{
return _in.ReadLine();
}
catch(IOException)
{
return null;
}
}
}
internal Parser(DirectoryPrx root)
{
_dirs = new ArrayList();
_dirs.Insert(0, root);
}
internal virtual void usage()
{
Console.Error.Write(
"help Print this message.\n" +
"pwd Print current directory (/ = root).\n" +
"cd [DIR] Change directory (/ or empty = root).\n" +
"ls List current directory.\n" +
"lr Recursively list current directory.\n" +
"mkdir DIR [DIR...] Create directories DIR in current directory.\n" +
"mkfile FILE [FILE...] Create files FILE in current directory.\n" +
"rm NAME [NAME...] Delete directory or file NAME (rm * to delete all).\n" +
"cat FILE List the contents of FILE.\n" +
"write FILE [STRING...] Write STRING to FILE.\n" +
"exit, quit Exit this program.\n");
}
internal virtual void list(bool recursive)
{
try
{
list((DirectoryPrx)_dirs[0], recursive, 0);
}
catch(Ice.LocalException ex)
{
error(ex.ToString());
}
}
internal virtual void list(Filesystem.DirectoryPrx dir, bool recursive, int depth)
{
StringBuilder b = new StringBuilder();
for(int i = 0; i < depth; ++i)
{
b.Append('\t');
}
string indent = b.ToString();
NodeDesc[] contents = dir.list();
for(int i = 0; i < contents.Length; ++i)
{
DirectoryPrx d = contents[i].type == NodeType.DirType
? DirectoryPrxHelper.uncheckedCast(contents[i].proxy) : null;
Console.Write(indent + contents[i].name + (d != null ? " (directory)" : " (file)"));
if(d != null && recursive)
{
Console.WriteLine(":");
list(d, true, ++depth);
}
else
{
Console.WriteLine();
}
}
}
internal virtual void createFile(IList names)
{
DirectoryPrx dir = (DirectoryPrx)_dirs[0];
foreach(string name in names)
{
if(name.Equals(".."))
{
Console.WriteLine("Cannot create a file named `..'");
continue;
}
try
{
dir.createFile(name);
}
catch(NameInUse)
{
Console.WriteLine("`" + name + "' exists already");
}
}
}
internal virtual void createDir(IList names)
{
DirectoryPrx dir = (DirectoryPrx)_dirs[0];
foreach(string name in names)
{
if(name.Equals(".."))
{
Console.WriteLine("Cannot create a directory named `..'");
continue;
}
try
{
dir.createDirectory(name);
}
catch(NameInUse)
{
Console.WriteLine("`" + name + "' exists already");
}
}
}
internal virtual void pwd()
{
if(_dirs.Count == 1)
{
Console.Write("/");
}
else
{
for(int i = _dirs.Count - 2; i >= 0; --i)
{
Console.Write("/" + ((DirectoryPrx)_dirs[i]).name());
}
}
Console.WriteLine();
}
internal virtual void cd(string name)
{
if(name.Equals("/"))
{
while(_dirs.Count > 1)
{
_dirs.RemoveAt(0);
}
return;
}
if(name.Equals(".."))
{
if(_dirs.Count > 1)
{
_dirs.RemoveAt(0);
}
return;
}
DirectoryPrx dir = (DirectoryPrx)_dirs[0];
NodeDesc d;
try
{
d = dir.find(name);
}
catch(NoSuchName)
{
Console.WriteLine("`" + name + "': no such directory");
return;
}
if(d.type == NodeType.FileType)
{
Console.WriteLine("`" + name + "': not a directory");
return;
}
_dirs.Insert(0, DirectoryPrxHelper.uncheckedCast(d.proxy));
}
internal virtual void cat(string name)
{
DirectoryPrx dir = (DirectoryPrx)_dirs[0];
NodeDesc d;
try
{
d = dir.find(name);
}
catch(NoSuchName)
{
Console.WriteLine("`" + name + "': no such file");
return;
}
if(d.type == NodeType.DirType)
{
Console.WriteLine("`" + name + "': not a file");
return;
}
FilePrx f = FilePrxHelper.uncheckedCast(d.proxy);
string[] l = f.read();
for(int i = 0; i < l.Length; ++i)
{
Console.WriteLine(l[i]);
}
}
internal virtual void write(IList args)
{
DirectoryPrx dir = (DirectoryPrx)_dirs[0];
string name = (string)args[0];
args.RemoveAt(0);
NodeDesc d;
try
{
d = dir.find(name);
}
catch(NoSuchName)
{
Console.WriteLine("`" + name + "': no such file");
return;
}
if(d.type == NodeType.DirType)
{
Console.WriteLine("`" + name + "': not a file");
return;
}
FilePrx f = FilePrxHelper.uncheckedCast(d.proxy);
string[] l = new string[args.Count];
args.CopyTo(l, 0);
try
{
f.write(l);
}
catch(GenericError ex)
{
Console.WriteLine("`" + name + "': cannot write to file: " + ex.reason);
}
}
internal virtual void destroy(IList names)
{
DirectoryPrx dir = (DirectoryPrx)_dirs[0];
foreach(string name in names)
{
if(name.Equals("*"))
{
NodeDesc[] nodes = dir.list();
for(int j = 0; j < nodes.Length; ++j)
{
try
{
nodes[j].proxy.destroy();
}
catch(PermissionDenied ex)
{
Console.WriteLine("cannot remove `" + nodes[j].name + "': " + ex.reason);
}
}
return;
}
else
{
NodeDesc d;
try
{
d = dir.find(name);
}
catch(NoSuchName)
{
Console.WriteLine("`" + name + "': no such file or directory");
return;
}
try
{
d.proxy.destroy();
}
catch(PermissionDenied ex)
{
Console.WriteLine("cannot remove `" + name + "': " + ex.reason);
}
}
}
}
internal virtual void error(string s)
{
Console.Error.WriteLine("error: " + s);
}
internal virtual void warning(string s)
{
Console.Error.WriteLine("warning: " + s);
}
internal virtual int parse()
{
#if COMPACT
_in = Console.In;
#else
_in = new StreamReader(new StreamReader(Console.OpenStandardInput(), Encoding.Default).BaseStream,
new StreamReader(Console.OpenStandardInput(), Encoding.Default).CurrentEncoding);
#endif
Grammar g = new Grammar(this);
g.parse();
return 0;
}
private ArrayList _dirs;
private TextReader _in;
}
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